APR Secondary Air Injection Breather Filter System TSI Universal CI100020-A Secondary Air Injection Breather Filter by APR®. Enhance your driving experience with this performance upgrade from APR. Made with speed junkies and tuning enthusiasts in mind, this premium-quality and highly engineered solution is right what you need to get the most performance out of your prized possession to enjoy a smooth and dynamic ride. It features a tough-as-nails construction made built to last. With this APR tuning product, you can enjoy many years of dependable operation under punishing conditions.
